| article html file updated | 28 September 2025 19:11 CEST | Update | https://www.mdpi.com/1999-4915/4/9/1711 |
| article html file updated | 29 August 2025 20:27 CEST | Update | - |
| article html file updated | 15 July 2022 21:57 CEST | Update | - |
| article html file updated | 5 February 2020 22:04 CET | Update | - |
| article html file updated | 8 May 2019 14:34 CEST | Update | - |
| article html file updated | 20 March 2019 12:45 CET | Update | - |
| article html file updated | 17 June 2015 02:27 CEST | Update | - |
| article html file updated | 7 February 2013 15:09 CET | Update | - |
| article html file updated | 24 January 2013 02:32 CET | Original file | - |
| Correction published | 5 October 2012 00:00 CEST | Correction | http://www.mdpi.com/1999-4915/4/10/2014 |
